On Thu, Aug 06, 2015 at 04:11:42PM +0200, Tomeu Vizoso wrote: > This backtrace illustrates the situation described above: > > (regulator_register) from [<c05efe64>] > (devm_regulator_register+0x48/0x84)
Please don't paste entire backtraces into commit messages, they are
enormous and contain very little useful content - they just obscure
actual information in the commit message. If you feel there's useful
information in there just include edited highlights with only that.
> +static int _regulator_enable(struct regulator *regulator, bool do_lock)
> {
> - int ret;
> + struct regulator_dev *rdev = regulator->rdev;
> + int ret = 0;
>
> - lockdep_assert_held_once(&rdev->mutex);
> + if (regulator->always_on)
> + return 0;
> +
> + if (rdev->supply) {
> + ret = regulator_enable(rdev->supply);
> + if (ret != 0)
> + return ret;
> + }
> +
> + if (do_lock)
> + mutex_lock(&rdev->mutex);
> + else
> + lockdep_assert_held_once(&rdev->mutex);
Eew. This do_lock stuff is *not* nice and going to be fragile. I'm not
a fan, we need something better.
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